Thoughtful, detailed coverage of the Mac, iPhone, and iPad, plus the best-selling Take Control ebooks.

 

 

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Go Back and Forth Fast in Preview

If you're reading a PDF in Apple's Preview software, and you follow a bookmark or an internal link to move around within the PDF, you can quickly return to where you were by pressing the keyboard shortcut Command-[ (that's Command-Left Bracket). Or, you can choose Go > Back.

The command works iteratively, so you can go back to just the previously viewed page or if you issue the command again, to the page before that, and so on. There's also an equivalent Go > Forward (Command-]).

 
 

Security Update 2010-004 (Leopard and Leopard Server)

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Along with Mac OS X 10.6.4, Apple has released a pair of security updates for Mac OS X 10.5.8 Leopard. Apple's Security Update 2010-004 Leopard-Client and Security Update 2010-004 Leopard-Server address 16 different security vulnerabilities.

Several vulnerabilities stem from CUPS (Mac OS X's printing system), including one that would enable an attacker to change CUPS settings were an administrator to visit a maliciously crafted Web site, one that could enable an attacker to issue a denial of service through a malicious get-printer-jobs request, and one that could enable an attacker with access to the CUPS Web interface to read a limited amount of memory from the cupsd process.

Also, the handling of TIFF and MPEG2 encoded files has been improved to avoid arbitrary code execution and program crashes, a problem in iChat that could enable an attacker to upload files to arbitrary locations has been fixed, and an issue that could cause data loss from unmounting maliciously crafted disk images or remote shares has been addressed. Other vulnerabilities that have been targeted relate to Mac OS X's handling of symlinks, Ruby, the SMB file server, and - in Mac OS X Server - SquirrelMail and Wiki Server.

It's worth noting that these updates include Flash Player 10.0.45.2, an outdated version that is vulnerable to security threats. Thus, if you have not yet installed Flash Player 10.1.53.64, you should do so manually after installing this update (see "Adobe Flash Player 10.1.53.64 Blocks 32 Security Holes," 11 June 2010). Fortunately, it appears that the security update does not overwrite the latest Flash Player should you have already installed it.

The full list of changes provided by the security updates is available on Apple's Web site. The updates are available via Software Update and the Apple Support Downloads page. (Free for both Mac OS X 10.5 Leopard and Leopard Server, 222/380.29 MB)

 

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